What Does a Blow Off Valve Do?

In this video we talk about the basics of how a blow off and diverter valves work.
We talk about what the blow off valve (BOV) and Diverter Valve (DV) do, their purpose and what the difference is. This video is for anyone looking for a quick overveiw on the turbo system and how the blow off and diverter valves fit into it.
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[@Deutscheautoparts]

- We appreciate your Support and Purchases! Shop for Blow off Valves here! - www.shopdap.com/

[@GBibian10819]

The title should be changed to, turbo guide for dummies. Simple, comprehensible, informative. Goodjob.

[@Kabal1247]

I'd buy it just for the BOV's eargasmic sound. *feels good man*

[@Alex-qx5rv]

Download the APP Turbo (Blow Off Valve) by iFuture Studio :P Your welcome!

[@bustyboy123]

But how good is dosing

[@isaacsellers700able]

Stututu. Mine just goes shhhh though.

[@positivesquad]

@@isaacsellers700able Thats what they are supposed to do. If it only does stututu your BOV does not work.

[@isaacsellers700able]

@@positivesquad haha I know man, or if the turbo is fluttering

[@fl_girl8451]

So a BOV is basically a car burp

[@BWalker-yg9en]

Or fart

[@imraan2320]

I just want a blow off valve for the noise

[@deejaymetro1227]

Same 😂🤣🤣🤣

[@pstrokeslibsarctic]

Lol

[@dazzmatazz]

Amen brother

[@jgmtfva]

Cool story.

[@ap3xls329]

“now go make me a sandwich” 🤓

[@mohammedgangat5799]

99.9 % of people fit a blow off valve or dump valve as it is also called just for the sound...

[@jonahdavies8661]

Already had an idea how the turbo system works and where the dump valve fits in. His video gave great information and clear viewing of the whole process.

[@xx96sunfirexx]

love these videos. you guys are so filled with knowledge. keep it up.

[@Deutscheautoparts]

+richard conte Thanks for the feedback. We appreciate it very much.

[@kanamemaster7464]

thank you for sharing this! it helped me a lot to understand how that valve system works

[@meanmanofsteel]

You talked about a blow off valve at the end of the video you release today (9 Oct 2022). I honestly don’t know what they do, so I did a KZbin search and the first video to pop up was this one! A video from 4 years ago! Awesome!

[@consumerthis3169]

I have a 2021 Stinger GT awd, I thought I knew how turbos worked until I watched this. Makes so much more sense now. Looking into buying some blow off valves, but left w some education! Thanks!

[@shomaru45]

This video was helpful like CRAZY! Thank you my man! Your words and diagram helped me out a lot!

[@Deutscheautoparts]

Awesome!! So glad to hear

[@jeansalazar7812]

Great video, now I know how it works, thanks! Greetings from Costa Rica!

[@brandonalexander8518]

Thank you for the explanation on differences between the two. BOVs vs. DVs isn't inherently obvious to someone who is new to turbo systems.

[@burntnugget1854]

Wow that diagram was so beautiful thank you so much...i work with my grandad in the mod shop but never understood exactly where the bo valve goes before the throttle body...thak you!!!!!

[@aizazhussain6088]

Everything makes sense now! Thanks

[@valkyr_rl7169]

Very clear and well described!

[@DM-dv5jx]

Good video with clear explanation 👍

[@mtx210]

very good video, 10/10 explaination, would recommend

[@ajaythomson22]

I didn't know what that pssshhh sound was untill I saw this video ! thanks (:

[@liette89]

Awesome video. best DV/BOV explanation on KZbin!

[@rogerpotempo]

omg, now that makes sense. My tune shop told me i can't add a blowoff valve. Now i understand why. I wanted the cool sound, but not at the expense of my engine.

[@billyp.7889]

Maybe discuss diagnosing a bad one and talk about DV options, that are on the market and what situation, you should upgrade from a stock version.

[@nyn199a72686]

I love the sound my turbo makes on my Audi S5 since I added a BOV

[@mrconnacht3017]

Thanks a lot! Very well explained

[@the1whoseesthroughu]

really good vid man, I just got an A3 and was think of this. Now I know its a later addon.

[@KumaBean]

I'm not a car person so I'm not very clued-up, and as a result of a comment on another video I had to look up the difference between turbo's and dump valves, I didn't know that turbo's went 'psssshhh' too, now I do, and why, cheers mate! 🤝 🍻

[@rickyhanson8863]

I needed this because I want to put a turbo and a blow of valve for my little 200cc four wheeler

[@On7ineOptix]

awesome. so easy to understand

[@hmm2928]

OMG!!!! u r a god to me !!! u taught that thing better than my engg teachers!!! u r a god!! i thought it was so complicated !!! but u just told in so simple and polite way ! that i understood what u meant to say :) ....thanks so much for the awesome video :)

[@hmm2928]

A BIG THANKS FROM INDIA !

[@jcnopal1740]

@@hmm2928 subscribe to pewdiepie

[@arjun._.bbC6]

Thanks. That explained it well.

[@danieltull3622]

Very helpful information

[@Sebas0889]

Perfect video😍

[@lucasdamico8947]

Very helpful thank you.

[@josephsebastian8380]

thanks for the video bro

[@johnti8603]

Nice Job brother

[@christianverde2498]

Hit boost Nobody: Blow off valve:sssssssssstututututututu

[@LogieT2K]

Christian Verde bovs dont dose they just psssssh

[@timmimonrdm3634]

the stututututututuututut comes from the air backlashing into the turbo turbine when you dont have a BOV

[@NOTaGLI]

Also that noise can come from the wastegate too if I'm not mistaken

[@generationrx7454]

@@LogieT2K My ASS!! All my 2020 GTI has is (APR intake, turbo inlet, turbo muffler delete, Forge BOV). Turbo flutter starts around 15psi, and sounds oohh soo sexy. I was surprised at how controllable the sound is, makes the car a one-note musical instrument. Drive light and granny it, it's barely heard. Dog it out a little, massive flutter and hiss. An excellent addition for driver/car familiarity and engagement. As for drops in boost, it's barely noticeable. Kinda like the car is, WITHOUT a BOV on it 😉

[@thilalfajri9416]

nice video man.

[@rohitpalsingh998]

Great video 👌👌👌

[@geovannygerman1939]

Good explanation

[@mendez_guzman9661]

I like the fact that he says if ur light Modding your car. No need to upgrade you diverter valve/ blow of valve. I’m anticipating once you going stage two you should consider upgrading the DV/BOV.

[@timothyfogarty9007]

Either way you go both are a nice upgrade compared to the plastic components from stock.

[@khelifa7278]

Thanks a lot bro

[@subven69]

it blows off the turbo

[@fl_girl8451]

I guss ur icon wants 2 no 9 A no 9 large A no 6 with extra dip A no 7 a no 45 And a large soda

[@spacegrass6632]

lmao

[@SjP_92]

Follow the damn train CJ!

[@SjP_92]

@@fl_girl8451 u forgot one with cheese x)

[@iRant4u]

Woah, didn't expect to see Charlotte! Maybe I can swing by and you guys can explain to me what the hell is wrong with my car lol

[@thewarrior5743]

Thanks man.❤

[@gman7359]

good video thanks

[@spacewizard69r96]

can you do a video on the vacuum lines on BOVs and how they work?

[@andy311348]

Thanks !

[@francislauzon6492]

Good explain thk 👍

[@31sartagodashaunrod7]

I’d get it just for the sound 😍🤤

[@avhc661eric]

So my question is. I recently bought a Forge atmospheric BOV for my 2014 mk6 gti 2.0tsi and the only mod under my hood is a CAI. In your opinion, can I install it now even with my stock ko3? or would it be safe to install it later this year when I purchase a ko4 or bigger turbo for my car? Thanks for awesome videos. You guys are amazing!

[@VaibhavSingh-hk5ef]

Well explained bro.. it helped me a lot .. thanks buddy..!! Keep it up #love_from_india

[@1flynlow]

what I needed to know is how do the vacuum lines run on a BOV

[@JonOuel]

Hey guys, can you do the same thing but for turbo back exhaust.. with pics like you did here.. very helpful!

[@rayarellano8188]

Thanks

[@samusn97]

Nice video. So this might have impact on air fuel mixture but does it impact turbo lag? Like increasing it cause you have to rebuild the intake charge? Or am I missing something?

[@nickyjam770]

Good video but still wondering what opens or how to BOV opens up to let the pressure go.

[@MurDocInc]

I got a APR snail intake, I get both spool and blow off sounds.

[@fernandomartinez-sz4jz]

can you guys do a review/install on bov on your mk7 gti please

[@Deutscheautoparts]

+fernando martinez We are planning a DIY on this BOV deutscheautoparts.com/mk7-gti-golf-r-blow-off-valve.html on our MK7 GTI..... Stay tuned

[@agostinodipisa7302]

Bravo

[@luisitolasvegas]

Once you installed the BOV Kit and want to switch to DIV, can you use the same kit or can you just swap the Valves? I sent an email about this with no response.

[@paranormalstoner9035]

I recently bought a forge blow off valve for my Apr stage 1 Mk6 GTi and the CEL came on a day after I installed it. Should I remove it?

[@rogerpotempo]

adding a cold air intake helps to make the bov louder.

[@nathangelios9477]

are you stupid

[@Jonathan-qc1ff]

lol have you done it before telling him his stupid, he's actually right.

[@s5filty]

a short ram makes the turbo louder too

[@doc.voltold4232]

Nathan Gelios c

[@SjP_92]

Same as "open filter" i guess? You'll hear intake air sound/spool up more easily too

[@sidneylahman7732]

What about on the skyline r32? would it mess up that air regulation too?

[@miltongrijalva7672]

which BOV can I buy for a Buick verano 2.0T 2013? please if you can send me a link where I can buy it, will be very helpful

[@ilanxxxx]

is it will be OK to install this on a ibiza 1.2 tsi?

[@MegaDav0]

Good video. I have a mk7 gti, I always liked the phhhsss sound, but mk7 comes with diverted. It would be wise to upgrade the diverter according to this video?

[@Deutscheautoparts]

+MegaDavO A BOV would work great on the MK7. We will have a DIY coming soon.

[@samgab]

So, is there any reason I can’t disconnect the low pressure recirc side from my factory valve, and blank off the hole in the side of the intake, so as to turn the factory divert valve into a vent to atmo BOV? The actual valve unit is functionally the same, isn’t it? Cheers!

[@jnguyen625]

Say if you're stage 2... intake..dp..tune....would you recommend a blow off valve or a recirculated one?

[@iJusttin45]

what will you run on the gti fsi build

[@Boatshedding]

I have APR Stage 1 on my mk7, would it be worth it to upgrade or will the stock one be fine. (The stock turbo valves sound aloud louder since stage 1) Thanks.

[@marios672]

I have a 2011 chevy traverse LS i want to upgrade my vehicle do you recommend it for me ?

[@martinasis80]

what would cause to a bov stay open all the time? I changed my stock bov for a turboxs sml(upgraded bov) brand new but stays open all the time same as the stock one?

[@ashwinkumar6728]

Quick question vw 1.2 Ltr gt tsi is it advisable to add a blowup valve with an ecu remap are we talking about power loss or gain?. Also also if I add an Hsk blow up valve for instance do I need to add a bigger turbo and inter cooler ? Please help need to figure this out

[@curtismann6851]

What damage is caused if your diverter valve isn't working? Let's say for like two years!!! (Found out mine was disconnected since I bought it on a 1.8L T, wondered what that bird flutter sound was after an acceleration :( . Somehow never threw any codes and wasn't caught in two dealer inspections!

[@garrettjohnsen]

Is it normal to hear a little bit of air being released from the blow off valve while cruising at higher RPMs? If I'm driving on the freeway and am in or near my power band, I can hear a little bit of air coming out before shifting. Also, if I am going wide open throttle from second to third, I don't here any BOV noise until the RPM's drop down and I'm getting on it again. I just bought a modified 135i and am new to the turbo world. Not sure what is normal and not. Car is running great and putting down appropriate dyno numbers.

[@jeremydelvaux6529]

Did it work by the same way for a diesel Engine?

[@triggahappyyt5420]

Will a normal bov work with a twin scroll turbo or will I need a certain type of bov.

[@davidrsmith2417]

Your lead photo shows a DV with two lines. Most simple have only one line - for manifold vacuum. Q1: Is the 2nd line for turbo Boost sense? Q2: what benefit is an IPCV added to a simple DV (a DV with 1 vacuum line control)? Porsche 944 Turbo, Forge DV. Adding a Forge IPCV.

[@rickl7024]

Back in the day I used to soup up a few turbo dodge cars,,, non of those used mass air flow sensors,, all you had to do was trick the map sensor from showing a overboost condition

[@Michael-vy9kn]

Thanks for that video :) The MK7 GTI has no mass airflow sensor, but manifold absolute pressure instead, right? So a BOV would be OK for that car?

[@Deutscheautoparts]

+Michaël S correct

[@Michael-vy9kn]

Thanks

[@kongxiong6005]

Blow off valve 100% badass

[@lucywucyyy]

is their any advantage to venting to atmosphere besides the sound?

[@amirulfahmi9241]

My question, if i not install the blow off / valve, into my turbo car, it’s that will effect to my engine..? Or just effect to my turbo only..?

[@s.ritiksebastin1126]

Should i install a bov for my new octavia Vrs ???

[@650hpreventon]

My vortrch making 9 psi, should I use thinnest valve spring or medium one? Why do I want thicker spring and thin one

[@sylenzf4748]

I have a pressure gauge on my charge air side. How much psi should the max be before the blow off valve opens?

[@13daprofessor]

What are you thoughts on so etching like the GFB Dv+? On a 2.0t for instance.

[@waynefilkins8394]

Should I get it for 2014 f150?

[@86leeuk]

Golf Mk7 R , BOV worth it? or remap needed?

[@Countrysideboy247]

What's more dependable for higher PSI, diverter valve or BOV?

[@BABYGODZILLA2009]

Hey man nice video, thanx, i have a 2015 Suzuki Alto RS Turbo (standard KEI car) this small car has amazing fuel economy and has a decent torque as well. This is my daily driver. Question is, iam interested in adding a BOV, should i? the only reason why i wanna do this is the psssshhhhh sound hehe. If i do, will this affect my fuel economy? The existing setup has the recirculating thing iam sure. Please share your thoughts. Thank you.

[@TheAmitkatyal]

hi, is aftermarket blow off valve affect the performance or power? in a car.i have megane rs 250 which doesn't have any blow off. i am considering to buy forge system for my Renault magane but i am bit confused wit now.

[@fernandomartinez-sz4jz]

what makes the flutter noise when you install the forge bov is it safe to run @Deutsche auto parts

[@LukasFunkB]

can i use it on 1.6HDI ?

[@faridfaab6709]

Hi please show how to rebuild a turbo.

[@xtruma]

So what is the differences between wastegates and dump/blowoff valves?? :/ they are all there to relieve the engine or tubine from the excess pressure into the whole syste, aren't they??

[@ahfa1987]

How do I know if my car has a mass airflow sensor? I got a mini cooper s 2014 f56, I always wanted to know, would it be ok to add a bov if what i'm going for is that sound? I'm not sure on how much turbo it exactly puts out but I've been told around 8 Psi

[@espido]

hello i got a VW tiguan 2010 (2.0T) gasoline i want to install a Blow off valve just for the sound, its ok? any system recommendation ?